Golf practice apparatus and head-movement detector



Jan. .12 1926. 1,569,766

J. MCARDLE GOLF PRACTICE APPARATUS AND HEAD MOVEMENT DETECTOR FiledAugust 18, 1924 INVENTOR.

,MJWMK A TTORNE Y.

Patented Jan. 12, 1926.

- citizen of the United States, residing at :Detroit, in the county ofWayne and State of Michigan, have invented a new and useful GolfPractice Apparatus and Head-Move- "ment Detector, of which the followingis a f specification.

- It is agreed .by experts in the game of golf that non-movementof thehead in any direction is essential to making the proper stroke in playor in practice, for in order to strike ,the'ball. with the clubcorrectly it is necessary that the arms andshoulders and hence the headmust be in the same position at the moment of impact as at the start ofthe back swing. Inorder to have the head in this position at thecompletion of the stroke it must not be moved during the stroke.

My"rinvention relates to a new and improved golf stroke practiceapparatus and head movement detector which permits the player to play orpractice a stroke allowing free movement to all parts of the body, atthe same time giving audible signal of movement of the head in anydirection.

My invention aims to provide an apparatus which is simple, light,compact, and which when folded may be carried in the golf-bag. Theapparatus does not comewithin the line of sight of the player whenmaking the stroke and does not bind his body in any way; consequentlythe player may make or practice a stroke under the same conditions aswhen the apparatus is not used, the only difference being that when theapparatus is used a signal is given when the head is moved at any partof the stroke.

I attain this result by the mechanism illustrated in the accompanyingdrawing, in which Figure 1 is a vertical section of the entire machine;

Figure 2 a sectional plan view through the signal mechanism on line 2-2in Fig. 1;

Figure 3 a plan view on the line 33 in Fig. 1 showing top of support,legs being omitted for clearness; and

Figure 4 an elevation showing the method of using the apparatus. I

In brief, the machine comprises a revolving reel carrrying a linefastened to the head of the player, the reel actuated by a spring andhoused in a sound box held by suitable support. Movement of the headcauses the reel to revolve, in one direction or the other,

mARDI-E? 0F bETRdlT, iIdHIGAfi.

o'pr PRACTICE APPAaATusAnD ;YHEAD4;MWEJMIENTIDETECEOR. L

'1 :v Application filed August 18;. 1924;; Serial N6. 732,785

which when turning produces-5*anrsaudibleaz signal, all ashereinafter.describediirldetail.

throughout the several views. ----;;;i Referring now to "the: drawing,-cylindrical sound ."box: hous1ng..-':-for;; 156615233.

Similar numerals refer to similar sparks which revolveson-theslottedscrewf'3,:which in turn screws intosupportswsupportg has athreaded neck projecting-through the bottom of the sound box housing 1on which is screwed nut '5 which hOIds su portQ fora: reel inplace. YThe reel -2 gis niademfetw pieces, a lower -flangeimarked 2 and an upperflange Gjintheform of; a;-cup.: 5-;The 7 two flanges are fastenedtogether atgthe'rhottom by soldering or other;. fasteninggthust-f;forming a grooved pulley on; gwhich -is ;wound line 7, one end ofthedinebeing fastenedto flange 6 and the otherprojecting-gthgough 7 hole 27 inhousing and'carry-ing. ahook,8

or other means for fastening to head gear worn by the player.

Inside the cup of flange 6 is a spiral wound spring 9, one end of whichpasses through the slotted center of screw 3, the other end fastening tothe cup of upper flange 6. Thus as the line 7 is pulled out, the reel 2revolves about screw pin 3 which is kept from turning in support 4 bylock 35 screw 10, winding up spiral spring 9; and when line 7 is allowedto move back towards housing l, said spring tends to uncoil, causingreel to revolve and wind up line again.

The edge of top flange 6 is serrated with small round teeth which rubagainst spring wire 11 fastened to housing 1. Thus when reel turns ineither direction, as line 7 is moved out or in, the serrations in flange6 striking against wire 7 cause an audible signal to be made. Plate 12which fits on top of the cup in top flange 6 holds flat spring 9 inplace and is in turn held down by screw pin 3, making the spring readilyaccessible. Top housing cover 13 covers the signal mechanism and is heldin place by screw 14 or other fastening.

Rod 15 screws into center of neck on support f and in turn is fastenedby nut 16 to support plate 17. This support plate is the hinge base forthe three adjustable legs which turn on hinge pins 18. These hinge pinsare slotted at the ends slipping over top plate 17 vertical flanges andbeing fastened thereto by rivets 19. Pin 18 is a tight fit in the lug 20which forms the hinge lug for legs so that some slight pressure must beusedvto nnove leg, thus eausi-ngsit to stay in posit-iondesired. lLug2D- is soldered or otherwise fastened to top tube 21 which has its lowerend bent in sli htly to, form a bearing for inner'tuhe' fltvhich carriesspring 23 fastened 4:0 said; ,-inner.=-tuhe rivet 24. There is 5.510625provided in tube 21 to receive spring send-:23 'When 111M722? is pulledout of nest with 21, so holding tube 10 iififlpiace when (extended;'fDhe lower end of .ituheflZiis fitfid.WithIiEOOtJQGlifastenbd-lto ilherinxhe.

Ic1ain1- :1- .1 L111 agoiafisstrokeipnactieerapparatus and 15iheadmovementidetector, the'c'ombination of snea'ns-fori-g. sound,zme'ans 'rfor isupsporttng sound mechanism, 'raIIdI'IHQ'aII'S for"dniti'ating isaidrsound bymmv'ement of the i r 2. 135mm gelf'istrokepraeticeapparatus: and he'adzmovemen-t Heteetor, the combination "of mmiautomatin sound gproiiucing mechanism anfd ns=-for operating saidmechanismby movement ozt the head' fin ng-elf stroke praticeapparatus,the --*eonlhinati'on of a- "revalving reel, means for "musing relf n)turn by movement of the -hezfd andnrhanismdor producing a'signal"when'reel is'ifevol vefi.

:In a head smovement'zdetector ior golf practice, the combination of anadjustable support, mechanism for producing sound,

-vtpgether Withnmans for causing sound to be initi'zfted'hy movement ofthe head.

,5. ln-agolf .st-rokepr-aetiee apparatus, the "combination of a flexiblemember, means for attaehing-said;member to head-gear or apparel worn bythe player, mechanism a11oW- ing movement of -=said member; and meanszfor producing ia -sound HIPOTI movement of J memberpwith isupporttforsame.

' :6. Inngolfstroke=pnaeticerapparatus,'ithe .rczmnbination of 2asurevolving member,' a spring'afonreturning ssa idcrnember to itsorigeinaliposition afteribeingimoved, means for producing sound uponmovement of :said

"tinemberyandlmeans ifo'r'oausing'oscillating anemberto imove withimovem-ent of the I E. In a golf strokevpractiee apparatus, themombination- 'of mechanism for producing a sound;mesns foroperatingsound mechanism by j movement 0f =the" head,' and means for"supporting said 'm'ehanism in such a manthat'i't can not 'tip"0-v'ero1"m0ve when same is operzrted. I

UoHN MCARDLE.

